Power take-off assembly



April 2, 1940- R. w. WAGNER POWER TAKE-OFF ASSEMBLY Original Filed May 16, 1938 INVENTOR ROBERT W.WAGNER ATTORNEYS Patented Apn 2,1940

' UNITED STATE-S "PATENT oFF ca 2.19am rowan. rAxs-orr ASSEMBLY Robert W. Warner, Detroit, Mich, aasignor to Detroit Harvester Co corporation of Michigan pany, Detroit; Mich, a

Original application 1m 10, less, Serial 1%.. 208,295. Divided and this application December is, 1938, Serial No. 248,711

1: Claims. (01. am

to provide an assembly of this type wherein two power take-off shafts, one disposed substantially at right angles and one disposed substantially parallel to the propeller shaft, may be operatively connected to the propeller shaft so as to be driven therefrom. r

Another object is to provide an assembly wherein the operation of such power take-off shafts may be conveniently controlled by suitable shifter mechanism.

Other objects, advantages and novel details of.

construction of this invention will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawing, wherein:

Figure l is a longitudinal horizontal sectional View through an assembly embodying my invention;

Figure 2 is a sectional view taken on the line 2-2 of Figure 1;

Figure 3 is a sectional view taken substantially on the line 3-3 of Figure 1;

Figure 4 is a sectional view taken substantially on the line 4t of Figure 1;

Figure 5 is a fragmentary longitudinal section through a portion of Figure 1.

Refen'ing now to the drawing, A is the propeller shaft, and B and B are the power takeofi shafts of an assembly embodying my invention.

As shown, the propeller shaft A extends between two universal joints 5 and 2, respectively, and has two sections 3 and t. As usual, a shaft 5 extends forwardly from the universal joint I to another universal joint 6 connected to a shaft 1 projecting rearwardly from the transmission 8 of an insubstantially ternal combustion engine (not shown), while a.

shaft 9 extends rearwardly from the universal joint 2 to the pinion gear (not shown) of the rear axle assembly.

Preferably the propeller shaft drive section 3 is provided within a suitable housing I 0 with ball bearings II and has a reduced stepped portion I! that is received within and extends axially of the driven section 4. Needle bearings I 3 are provided about the steps Hi and I5, respectively, of the drive section 3 within the driven section 4. The driven section 8 is provided at its forward end with an integral toothed clutch member 16 and is provided within the housing lll'with ball bearings".

Splined upon the drive section 3 between the ball bearings. and the clutch member I 6 is a sleeve-type toothed clutch member, it, while free- 1y rotatable upon-the driven section 4' between the clutch member l6 and the .ball bearings ll is a power take-oif'sleeve, it upon which is keyed a beveled sear 20. Encircling this sleeve i9 upon opposite sides of the bevel gear 20 are roller bearings 2i and 22,'respectively, which cooperate with the ball bearings II and I1 to maintain the stepped portion I! of the drive section 3 in proper axialrelatlonship to the driven section 4. Thus, the stepped portion i2 of the drive section serves in effect as a pilot within the driven section 4. Preferably there is ample clearance between the driven section 4 and the power take-off sleeve I9 to compensate for any inaccuracies in machining which may occur and any misalignment in assembly. Thus, no binding between the parts will take place.

Formed integral with the power take-ofi sleeve it at a point between the clutch member and roller bearings 28 is a toothed clutch member 23 which, like the clutch members 26 and it, is

adapted to be encircled by a sliding clutch collar 2 Preferably this sliding clutch collar 2a is provided interiorly thereof with integral toothed clutch members 25 and it and'a-n intermediate channel or recess Zhand is providedexteriorly thereof with an annular groove or channel 2a which is engaged by a shifter forlrzt fixed upon a shaft 30 slidable longitudinally in the housing it. As shown, the arrangement is such that clutch member 25 will always be in'engagement with clutch member It and may be engaged with clutch member it while in engagement with clutch member l8. Clutch member it is adapted to be alternately engaged with clutch members I 6 and 23. Any suitable. means (not shown) may be employed from'a remote point, for example, from the dash or instrumentboard of the truck, for sliding shaft 30 longitudinally to cause collar 24 to be shifted longitudinally to the right or left so that the'engagement of gears described above may be efiected, while anyfsuitable means, such as the spring pressed balls Sh-may be employed to retain the shaft30 in-adiusted position.

Formed integral with the inner end of the power take-01f shaft B is a bevel gear 32 that meshes with the bevel gear 20 on the drive section 4 of the propeller shaft. At the outer end of the power take-off shaft B is a universal joint 33 to which a shaft for driving equipment or mechanism (not shown) may be connected.

Fixed upon the hub 34 of the bevel gear 23 is a spur gear 35 adapted to be engaged by a gear 38 splined on the power take-off shaft 3''. A shaft 31 slidably mounted in the housing Ill and adapted to be operated from a remote point, for example. from the dash or instrument board of the truck, by suitable means (not shown) is employed for sliding the gear 33 on the power take-off shaft 18' to and from engagement with the spur gear 35. As shown, shafq 31 has a recessed portion 33 straddling the periphery of gear 36 and is provided at one end with spaced annular grooves for the reception of a springpressed ball 39 in the housing to retain said shaft in adjusted position.

Thus, from the foregoing it, will be apparent that the assembly shown in Figure 1 is in neutral position. When the clutch collar 24 is shifted from neutral to the left so that clutch members 26 and i6 are in engagement with each other, then the drive is transmitted from the drive section 3 through clutch members l8 and 25, collar 24 and clutch members 26 and ii to the driven section 4 to propel the rear wheels (not shown) of the truck. In this position the power takeoff shafts B and B are idle. When the collar 36 is shifted from neutral position to the right so that clutch members 36 and 23 are in engagement with each other, then the drive is transmitted from the drive section 3 through clutch members 58 and 25, collar 24 and clutch members 26 and 23 to the power take-ofl sleeve is, thence through the bevel gears and 32 to the power take-off shaft B and through the bevel gear 20, hub 34, to the spur gear 35. In this position the power take-ofl shaft B is actuated only. If the gear 38 is shifted by the shaft 3? into mesh with the gear 35, then the power take-off shaft 2' is also actuated When this takes place, both shafts B and B are actuated simultaneously by the bevel gear 20. When collar 72s is shifted further to the right from the power take-oi drive position just mentioned so that clutch member 25 will engage with clutch member l6 while clutch member 25 is in engagement with clutch member l8, and clutch member 26 is in engagement with clutch member 23, then the drive is transmitted from drive section 3 through clutch members I8, 25 and IE to the driven section l and through clutch members I 8 and 25, collar 24 and clutch members 26 and 23 to the power take-off sleeve is. Thus, in this position, both the rear wheels of the truck and the power take-on shaft B are operated simultaneously. If gear 36 is shifted by shaft 31 into mesh with gear 35 while the parts aforesaid are in the position mentioned, then the power take-off shaft B is likewise operated simultaneously with power take-off shaft B and the rear wheels of the truck.

From the foregoing it will be apparent that my construction enables the rear wheels of the truck alone to be driven; enables the power take-oi! shaft B alone to be driven; enables the power take-off shaft B and power take-off shaft B to be driven simultaneously; and enables the rear wheels of the truck and both power take-off shafts B and B to be driven simultaneously.

What I claim as my invention is:

1. In a power take-off assembly, a propeller shaft, a power take-off shaft substantially parallel to said propeller shaft, a power take-off shaft extending at substantially right angles to said propeller shaft, means for driving the second mentioned power take-off shaft from the propeller shaft, and a driving connection between the propeller shaft and first mentioned power take-oil. shaft including a part of the means for giving the second mentioned power take-off 2. In a power take-on assembly, a propeller shaft, a power take-oi! shaft substantially parallel to said p p ller shaft, a power take-oil. shaft extending at substantially right angles to said propeller shaft. means for driving the second mentioned power take-oi! shaft from the propeller shaft, and means operable by a part of the last mentioned means for driving the first mentioned power take-oil shaft.

3. In a power take-off assembly, a propeller shaft having a drive section and a driven section, a power take-off shaft substantially parallel to said propeller shaft, a power take-off shaft extending at substantially right angles to said propeller shaft, driving connections between said drive section and driven section of the propeller shaft and between said propeller shaft and second mentioned power take-ofi shaft operable to drive the driven section of the propeller shaft and said second mentioned power take-on shaft simultaneously, and means operable by a part of the drive for the second mentioned power take-off shaft for driving the first mentioned power take-off shaft.

4. In a power take-on. assembly, a propeller shaft having a drive section and a driven section, a power take-off shaft substantially parallel to said propeller shaft, a power take-off shaft extending at substantially right angles to said propeller shaft, driving connections between said drive section and driven section of the propeller shaft and between said propeller shaft and second mentioned power take-01f shaft operable to drive the driven section of the propeller shaft and said second mentioned power take-off shaft simultaneously, a driving connection between the first mentioned power take-oi! shaft and the drive means for the second mentioned power take-off shaft, and means for controlling the last mentioned driving connection.

5. In a power take-off assembly, a propeller shaft having two sections, one being a drive section and the other a driven section, a clutch member fixed to the driven section, a clutch member splined on the drive section, a power take-off sleeve freely rotatable upon the driven section, a power take-01f gear fixed to said sleeve, a clutch member fixed to said sleeve, a sliding collar encircling the first two mentioned clutch members and adapted to encircle the third mentioned clutch member, a clutch member rigid with said collar constantly in engagement with the second mentioned clutch member and adapted to engage with the first mentioned clutch member while in engagement with the second mentioned clutch member, another clutch member rigid with said collar adapted to altemately engage with the first and third mentioned clutch members, a power take-oil shaft operatively connected to the power take-off gear, a gear rigid with the power take-oi! gear, a second power take-off shaft, and means for operatively connecting the second power take-o f shaft to the last mentioned gear.

6. In a power take-off assembly, a propeller shaft, a power take-oil shaft disposed at substantiallyrimtanglestosaidpropellersbafga power take-off shaft disposed substantially parallel to said propeller shaft, a gear carried by the first mentioned power take-off shaft, a driving connection between said propeller shaft and first mentioned power take-off shaft including a gear meshing with the gear aforesaid, and a driving connection between the last mentioned gear and the second mentioned power take-off shaft.

7. In a power take-off assembly, a propeller shaft,'a power take-off shaft disposed at substantially right angles to said propeller shaft, a power take-off shaft disposed substantially parallel to said propeller shaft, a gear carried by the first mentioned power take-off shaft, a driving connection between said propeller shaft and first mentioned power take-01f shaft including a gear meshing with the gear aforesaid, and a driving connection between the last mentioned gear and second mentioned power take-off shaft including means operable to cause the second mentioned power take-off shaft to operate in unison with the first mentioned power take-off shaft or remain idle during operation thereof.

8. In a power take-ofl assembly, a propeller shaft, a power take-01f shaft disposed at substantially right angles to said propeller shaft, a power take-ofl' shaft disposed substantially parallel to said propeller shaft, a gear carried by the first mentioned power take-off shaft, a driving connection between said propellertshaft and first mentioned power take-off shaft including a gear meshing with the gear aforesaid, a gear operatively connected to the second mentioned gear, a gear splined upon the second mentioned power take-off shaft and adapted to mesh with the third mentioned gear, and shifter mechanism for the last mentioned gear.

9. In a power take-off assembly, a propeller shaft, a power take-off shaft disposed at substantially right angles to said propeller shaft, a power take-off shaft disposed substantially parallel to said propeller shaft, a bevel gear adapted to be driven by the propeller shaft and having a hub, a gear fixed to the hub of said bevel gear so that said gears operate in unison, means operable by the bevel gear for driving the first mentioned power take-off shaft, and means operable by the secondmentioned gear for driving the second mentioned power take-ofl shaft.

10. In a power take-oflassembly, a propeller shaft having'a drive section and a driven section,

a power take-off shaft disposed substantially at right angles to said propeller shaft, a power takeoff shaft disposed substantially parallel to said propeller shaft, a bevel gear concentric with the driven section and adapted to be driven by the drive section of the propeller shaft, said bevel gear having a hub, a gear fixed to the hub of said bevel gear so that said gears operate in unison, means for driving the driven section from the drive section of the propeller shaft, means operable by the bevel gear for driving the first mentioned power take-off shaft, and means operable by the second mentioned gear for driving the second mentioned power take-off shaft.

11. In a power take-off assembly, a propeller shaft having a drive section and a driven section, a power take-off shaft disposed substantially at right angles to said propeller shaft, a power takeoff shaft disposed substantially parallel to said propeller shaft, a power take-off sleeve freely rotatable on the driven section and adapted to be driven by the drive section, a bevel gear upon and rigid with said sleeve, said bevel gear having a hub, a gear fixed to the hub of said bevel gear so that said gears operate in unison, means for driving the driven section from the drive section of the propeller shaft, means operable by the bevel gear for driving the first mentioned power take-off shaft, and means operable by the second mentioned gear for driving the second mentioned power take-off shaft.

12. In a power'take-off assembly, a propeller shaft, a power take-01f shaft disposed at substantially right angles to said propeller shaft, a power take-01f shaft disposed substantially parallel to the propeller shaft, means for driving one of said power take-off shafts from said propeller shaft, and means including a part of the means just mentioned for driving the other of said power take-off shafts.

13. In a power take-off assembly, a propeller shaft, a power take-off shaft substantially parallel to said propeller shaft, a power take-01f shaft disposed at substantially right angles to the propeller shaft, means for driving one of said power take-01f shafts from the propeller shaft, and means operable by a part of the drive means just mentioned for driving the other of said power take-01f shafts.

ROBERT W. WAGNER. 

